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| author | Bart Van Assche <bvanassche@acm.org> | 2018-09-26 23:01:03 +0200 |
|---|---|---|
| committer | Jens Axboe <axboe@kernel.dk> | 2018-09-26 23:11:28 +0200 |
| commit | bca6b067b0b269a7b8ba129e2a918309ca8b4a55 (patch) | |
| tree | 8c41db994ddaf2023d881189cd947fce24f3b7d3 /block/elevator.c | |
| parent | xen: don't include <xen/xen.h> from <asm/io.h> and <asm/dma-mapping.h> (diff) | |
| download | linux-bca6b067b0b269a7b8ba129e2a918309ca8b4a55.tar.xz linux-bca6b067b0b269a7b8ba129e2a918309ca8b4a55.zip | |
block: Move power management code into a new source file
Move the code for runtime power management from blk-core.c into the
new source file blk-pm.c. Move the corresponding declarations from
<linux/blkdev.h> into <linux/blk-pm.h>. For CONFIG_PM=n, leave out
the declarations of the functions that are not used in that mode.
This patch not only reduces the number of #ifdefs in the block layer
core code but also reduces the size of header file <linux/blkdev.h>
and hence should help to reduce the build time of the Linux kernel
if CONFIG_PM is not defined.
Signed-off-by: Bart Van Assche <bvanassche@acm.org>
Reviewed-by: Ming Lei <ming.lei@redhat.com>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Cc: Jianchao Wang <jianchao.w.wang@oracle.com>
Cc: Hannes Reinecke <hare@suse.com>
Cc: Johannes Thumshirn <jthumshirn@suse.de>
Cc: Alan Stern <stern@rowland.harvard.edu>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
Diffstat (limited to 'block/elevator.c')
| -rw-r--r-- | block/elevator.c | 22 |
1 files changed, 1 insertions, 21 deletions
diff --git a/block/elevator.c b/block/elevator.c index 6a06b5d040e5..e18ac68626e3 100644 --- a/block/elevator.c +++ b/block/elevator.c @@ -41,6 +41,7 @@ #include "blk.h" #include "blk-mq-sched.h" +#include "blk-pm.h" #include "blk-wbt.h" static DEFINE_SPINLOCK(elv_list_lock); @@ -557,27 +558,6 @@ void elv_bio_merged(struct request_queue *q, struct request *rq, e->type->ops.sq.elevator_bio_merged_fn(q, rq, bio); } -#ifdef CONFIG_PM -static void blk_pm_requeue_request(struct request *rq) -{ - if (rq->q->dev && !(rq->rq_flags & RQF_PM)) - rq->q->nr_pending--; -} - -static void blk_pm_add_request(struct request_queue *q, struct request *rq) -{ - if (q->dev && !(rq->rq_flags & RQF_PM) && q->nr_pending++ == 0 && - (q->rpm_status == RPM_SUSPENDED || q->rpm_status == RPM_SUSPENDING)) - pm_request_resume(q->dev); -} -#else -static inline void blk_pm_requeue_request(struct request *rq) {} -static inline void blk_pm_add_request(struct request_queue *q, - struct request *rq) -{ -} -#endif - void elv_requeue_request(struct request_queue *q, struct request *rq) { /* |